[Schematics] Module resolution does not work with dots in package name

[zartinn]

🐞 Bug report

Command (mark with an x)

• new
• build
• serve
• test
• e2e
• generate
• add
• update
• lint
• xi18n
• run
• config
• help
• version
• doc

Is this a regression?

Yes, the previous version in which the bug was not present with Angular CLI 8.2.2

Description & Minimal Reproduction

External schematics executed with

ng g @myorg/some.package

does not work in Angular 9 anymore.
The problem seem to be the module resolution with packages that have a dot in it.
Renaming the package without a dot to @myorg/some-package fixes the issue and the CLI executes correctly the schematic. But it would be nice if the module resolution will be working again with dots.

🔥 Exception or Error

[error] Error: Cannot find module '@myorg/some.package'
at Function.Module._resolveFilename (internal/modules/cjs/loader.js:636:15)
at Function.resolve (internal/modules/cjs/helpers.js:33:19)
at NodeModulesEngineHost._resolveCollectionPath (/Users/zartin/ws/ang9/node_modules/@angular-devkit/schematics/tools/node-module-engine-host.js:36:38)
at NodeModulesEngineHost.createCollectionDescription (/Users/zartin/ws/ang9/node_modules/@angular-devkit/schematics/tools/file-system-engine-host-base.js:109:27)
at SchematicEngine._createCollectionDescription (/Users/zartin/ws/ang9/node_modules/@angular-devkit/schematics/src/engine/engine.js:147:40)
at SchematicEngine.createCollection (/Users/zartin/ws/ang9/node_modules/@angular-devkit/schematics/src/engine/engine.js:140:43)
at GenerateCommand.getCollection (/Users/zartin/ws/ang9/node_modules/@angular/cli/models/schematic-command.js:127:35)
at GenerateCommand.initialize (/Users/zartin/ws/ang9/node_modules/@angular/cli/models/schematic-command.js:43:37)
at process._tickCallback (internal/process/next_tick.js:68:7)
at Function.Module.runMain (internal/modules/cjs/loader.js:834:11)

🌍 Your Environment

Angular CLI: 9.1.0
Node: 10.18.1
OS: darwin x64

Angular: 9.1.0
... animations, cli, common, compiler, compiler-cli, core, forms
... language-service, platform-browser, platform-browser-dynamic
... router
Ivy Workspace: Yes

Package Version

@angular-devkit/architect 0.901.0
@angular-devkit/build-angular 0.901.0
@angular-devkit/build-optimizer 0.901.0
@angular-devkit/build-webpack 0.901.0
@angular-devkit/core 9.1.0
@angular-devkit/schematics 9.1.0
@angular/cdk 9.2.0
@angular/material 9.2.0
@ngtools/webpack 9.1.0
@schematics/angular 9.1.0
@schematics/update 0.901.0
rxjs 6.5.5
typescript 3.8.3
webpack 4.42.0

[BenjaminDobler]

There is a related issue which was already fixed here:
#17085

And the fix:
ea3d9e0#diff-8244badb0e200238f4c59331169e0b83

I found out that this also fixes this "." issue.
Is there any information when this will be released? Is there a chance for a fix release for 9 or are we more looking at v10?
Thank You

[alan-agius4]

Hi @BenjaminDobler, this should be released in the coming days and will be part of 9.1.1

Closing the issue as this is a duplicate of #17085 and is already addressed.

Thanks.

[angular-automatic-lock-bot]

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